# Finding Thevenin Equivalent voltage and resistance

I'm trying to determine the Thevenin equivalent voltage and resistance across this simple circuit below. I understand the theory but can get difficult when trying to apply it.

Using Kirchoff Loop and junction laws I came up with the following equation:

1) $I1=I2+I3$

2) $Vin-I1R1-I2R2=0$

3) $Vin-I1R1-I3R3-Vth=0$

4) $I2R2=I3R3$

Which I found the Thevenin voltage to be $Vth=VinR3/(R3+R1)$ and the resistance to be $Rth = R1+(R2R3/R2+R3)$

The resistance seems plausible but the voltage doesn't as I would expect R2 to be in the equation somewhere. Any help is appreciated as I am not sure what I have done wrong. Feel free to edit my question for clarity.